摘要
用Ｌｏｇｉｓｔｉｃ方程和Ｒｉｃｈａｒｄ方程分段描述８个毛白杨无性系９年生、１２年生林木的生长动态，揭示了不同无性系生长型的差异，预测了１５年时的生长量。不仅为选择提供了科学依据，对速生丰产林经营也具有重要的指导意义。研究表明用不同曲线方程分段描述林木生长动态优于使用单一曲线。
The growth dynamics of 8 Populus tomentosa clones for 9-year-old and 12-year-old trees were discribed by Logistic model and Richard function sectionally.There existed significant different among growth types of clones.The increment of clones in the 15th year is predicted by the model.The results are not only help for selection but also for managing fast-growing and high-yigld forest.Using different equations sectionally is better than using one equation to describ tree growth.
出处
《陕西林业科技》
北大核心
1995年第4期5-10,共6页
Shaanxi Forest Science and Technology
关键词
毛白杨
无性系
生长动态
生长型
生长预测
Populus tomentosa
clones
growth dynamic
growth type
forecast
